1. Carbon-12 and Carbon-14 have a different number of

A. ProtonsB. NeutronsC. BothD. Neither

Protons

Neutrons

Both

Neither

21%

0%4%

75%

Isotopes

2. Which statement is true about an isotope’s half life?A. Isotopes of the same element will

have the same half life.B. The longer a half life, the less

stable an isotope is.C. An isotope’s half life cannot be

changed.D. All of the above.

Isotopes o

f the sa

me el...

The longer a

half life

, the...

An isotope’s h

alf life

cann..

All of th

e above.

12%

36%40%

12%

Radioactive Isotopes

3. When an isotope undergoes fission, A. Energy is released.B. Another isotope is

produced.C. Particles are released.D. All of the above.

Energy is r

eleased.

Another isoto

pe is pro

d...

Particle

s are re

leased.

All of th

e above.

26%

70%

0%4%

Radioactive Decay

4. 700 curies of Strontium-89 was released from the Hanford plant. It has a half life of 50 days. How many days later will it be after 2 half-lives have elapsed?

A. 100 daysB. 175 daysC. 350 daysD. 700 daysE. 1400 days

100 days

175 days

350 days

700 days

1400 days

85%

5% 5%5%0%

Radioactive Decay

5. 700 curies of Strontium-89 was released from the Hanford plant. It has a half life of 50 days. How many curies of Sr-89 will be left after 2 half-lives?

A. 0 curiesB. 100 curiesC. 175 curiesD. 350 curiesE. 700 curies

0 curie

s

100 curie

s

175 curie

s

350 curie

s

700 curie

s

10%5%

0%5%

81%

Radioactive Decay

6. When a neutron decomposes into a proton and an emitted electron which type of radiation is occurring?

A. AlphaB. BetaC. GammaD. Positron

AlphaBeta

Gamma

Positron

14%9%

18%

59%

7. A particle emitted during nuclear decay that consists of 2 protons and 2 neutrons (a helium nucleus) is a

A. Alpha particleB. Beta particleC. Gamma rayD. Positron

Alpha particle

Beta parti

cle

Gamma ray

Positron

59%

18%18%

5%

8. Which of the following types of radioactive decay will change the isotope from one element to another?

A. AlphaB. BetaC. GammaD. Both A and BE. A, B and C

AlphaBeta

Gamma

Both A and B

A, B and C

9% 9%

18%

36%

27%

9. Which of the following types of radioactive decay will decrease the mass of the isotope?

A. AlphaB. BetaC. GammaD. Both A and BE. A, B and C

AlphaBeta

Gamma

Both A and B

A, B and C

21%

5%

11%

32%32%

Alpha decay decreases the atomic number by 2, because the alpha particle includes two protons.The mass decreases by 4 since the particle also contains to neutrons.

Beta-plus decay decreases the atomic number by one since a proton is split into a neutron and a positron. The mass does not change since the particle released does not contain significant mass.

Beta minus decay INCREASES the atomic number by one since a neutron is split into a proton and an electron.The mass does not change since the electron that is released does not have significant mass.

Gamma radiation does not change the atomic number or the mass of an atom.

10. Which of the following is not a type of ionizing radiation?

A. Gamma WavesB. X-RayC. Radio WavesD. Ultra-violet Waves

Gamma Waves

X-Ray

Radio Waves

Ultra-violet W

aves

5% 5%

75%

15%

Inverse relationshipOne factor increases, the other decreases.Example: Pressure varies inversely with volume.

Direct relationship Both increase together (or decrease together). Example: Pressure varies directly with temperature.

Review of Inverse and Direct Relationships

11. The wavelength of a wave varies _______ with frequency and _____ with energy.

A. Inversely; directlyB. Directly; inverselyC. Directly with bothD. Inversely with both

Inverse

ly; dire

ctly

Directl

y; inverse

ly

Directl

y with

both

Inverse

ly with

both

35%

26%

13%

26%

Increasing frequency

12. In a nuclear reactor, water is used to

A. Generate steam to produce electricity.

B. Cool the reactor core.C. Both A and B.D. Neither A nor B

Generate st

eam to prod...

Cool the re

actor c

ore.

Both A and B.

Neither A

nor B

4%8%

40%48%

13. The country that gets the highest percentage of their electricity from nuclear is

A. The United StatesB. JapanC. FranceD. China

The United States

Japan

France

China

8%

0%

46%46%

14. The country that generates the most nuclear energy is

A. The United StatesB. JapanC. FranceD. China

The United States

Japan

France

China

96%

0%0%4%

15. Which act limits liability to nuclear energy companies for accidents?

A. Nuclear Waste Policy ActB. Nuclear Accident

Insurance Act.C. Price Anderson ActD. Truman Nuclear Policy Act

Nuclear W

aste Polic

y Act

Nuclear A

ccident In

sura...

Price Anderso

n Act

Truman Nuclear P

olicy Act

29%

19%

38%

14%

16. The only significant nuclear power plant accident the United States happened in

A. PennsylvaniaB. WashingtonC. VirginiaD. Nevada

Pennsylvania

Wash

ington

Virginia

Nevada

60%

4%

16%20%

17. The cause of the nuclear accident at Three Mile Island was

A. An explosion in one of the reactor cores.

B. Loss of coolant to one of the reactor cores.

C. Accidental discharge of radioactive water into the local river.

D. All of the above.An exp

losion in

one of th...

Loss

of coolant t

o one of...

Accidental d

ischarge

of r...

All of th

e above.

9%

43%

9%

39%

18. The Chernobyl nuclear accident happened in

A. SwedenB. RussiaC. UkraineD. Slovakia

SwedenRussi

a

Ukraine

Slovakia

0% 0%

67%

33%

19. Currently, high level nuclear waste is stored

A. At Yucca Mountain.B. In government-run

landfills.C. At each nuclear reactor

site.D. All of the above.

At Yucca

Mountain.

In govern

ment-run la

ndfills.

At each

nuclear

reactor s

ite.

All of th

e above.

16%

32%

40%

12%

20. Which of the following is not a disadvantage to nuclear power?

A. Low fuel supplyB. Lack of location for

storage of wasteC. Potential for catastrophic

accidentsD. High cost

Low fu

el supply

Lack of lo

cation for s

tora..

Potential for c

atastrophi...

High cost

75%

13%4%8%

Uranium Reserves

1. B2. C3. D4. A5. C6. B7. A8. D9. A10.C11.D12.C13.C14.A15.C16.A17.B18.C19.C20.A